Also to add:
They also set forth a timeline for the fact that citizens had to be living here for a certain timeframe (I cant remember off the top of my head the exact words - paraphrasing) but..
even if both of your parents were citizens and you were born on U.S. soil but your parents did not fit the prescribed timeline of living in the United States then you still weren’t eligible for the presidency.
Again, defined by what U.S. law or what clause of the Constitution?